After the cut at ,
and
are forced. White bends at
, and Black can only save his group by setting up the ko with
and
. This is a heavy ko for black which White takes first.
The hane at does not work. The diagonal move at
is a tesuji which results in double damezumari for Black, so the Black group is cleanly captured.
HolIgor: On a side note, are we missing a stone in the upper right corner?
unkx80: I copied this from KenshinM4, so only he knows.
KenshinM4: I dont think that we are missing a stone. What would make you think that?
unkx80: I guess HolIgor is thinking that the upper right is missing a Black stone because it is exactly the weak carpenter's square.